Induction damping device of steel enclosure structure and construction method of induction damping device

Abstract

The invention discloses a construction method of an induction damping device of a steel retaining structure. The construction method comprises the following steps: step 1, designing a distribution diagram of a magnetic material (1); step 2, temporarily installing the magnetic material (1) on site according to the distribution map; 3, the installation direction and the installation density of the magnetic material (1) are adjusted according to the actual vibration reduction effect; step 4, fastening the magnetic material (1); and 5, the induction damping device of the steel enclosure structure is maintained. According to the construction method of the induction vibration reduction device of the steel enclosure structure, the non-uniform magnetic field of the magnetic material component is arranged, and the inter-column supporting steel component generates instantaneous current when vibrating in the non-uniform magnetic field, so that harmful mechanical energy of vibration is converted into heat loss through electromagnetic induction, and the vibration reduction effect on the inter-column supporting steel component is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure vibration reduction, and in particular to an induction vibration reduction device for a steel enclosure structure and a construction method thereof. Background Art

[0002] Steel structure factory building is a type of building that uses steel as the main structural material and is composed of steel frames, steel beams, steel columns and other components. It is widely used in industrial production, warehousing, logistics, commerce and other fields.

[0003] Steel structure factories are the main structural form of heavy and large-span industrial buildings, and are often subjected to frequent vibration loads. In order to meet the requirements of industrial production process, such steel structures often have large bays and spans, so a large number of roof supports, column supports and other column support steel components are required.

[0004] In structural design, compared with main load-bearing components such as beams and columns, the loads borne by these inter-column support steel components are relatively small, and the strength calculation is often redundant; but due to the large support distance, most of these components are slender rods with low stiffness. Under the action of vibration load, the deformation is much greater than that of the main components. The support structure that meets the strength requirements often cannot meet the stiffness requirements. Therefore, during the design, the cross-sectional size of these inter-column support steel components will be increased or the support will be encrypted to reduce deformation. However, these two methods will greatly increase the material consumption, so that the strength of the steel structure material cannot be fully exerted, resulting in material waste, and will also lead to the problem of increased deadweight of the steel structure. Summary of the invention

[0005] The purpose of the present invention is to provide an induction vibration reduction device for a steel enclosure structure and a construction method thereof. The construction method of the induction vibration reduction device for a steel enclosure structure can achieve a vibration reduction effect on the inter-column supporting steel components by setting a non-uniform magnetic field of a magnetic material component. When the inter-column supporting steel components vibrate in the non-uniform magnetic field, an instantaneous current is generated, thereby converting the harmful mechanical energy of the vibration into heat dissipation through electromagnetic induction, thereby achieving a vibration reduction effect on the inter-column supporting steel components.

[0006] In order to achieve the above object, the present invention provides a construction method of an induction vibration reduction device for a steel enclosure structure, the construction method comprising:

[0007] Step 1, designing a distribution map of magnetic materials;

[0008] Step 2: temporarily installing the magnetic material on site according to the distribution map;

[0009] Step 3: adjusting the installation direction and installation density of the magnetic material according to the actual effect of vibration reduction;

[0010] Step 4, fastening the magnetic material;

[0011] Step 5: Maintain the induction vibration reduction device of the steel enclosure structure.

[0012] Preferably, in step 1, the distribution diagram includes the installation height, magnetic pole direction and required quantity of the magnetic material.

[0013] Preferably, in step 3, the density of the magnetic material is increased or decreased according to the actual vibration reduction effect.

[0014] Preferably, in step 4, the magnetic material is fixed to the column by screwing.

[0015] Preferably, the gap between the magnetic material and the pillar is filled.

[0016] Preferably, in step 5, a magnetometer is used to measure the magnetic strength of the magnetic material, and the magnetic material with reduced magnetism is replaced.

[0017] The present invention also provides a steel enclosure structure induction vibration reduction device constructed according to the construction method of the steel enclosure structure induction vibration reduction device. The steel enclosure structure induction vibration reduction device can construct a three-dimensional non-uniform magnetic field environment between two adjacent columns. The inter-column supporting steel member is fixedly connected to the column to form a loop. When the inter-column supporting steel member located between the two columns vibrates, the inter-column supporting steel member will generate an Ampere force that hinders movement in the three-dimensional non-uniform magnetic field environment. Under the action of the Ampere force, the vibration mechanical energy of the inter-column supporting steel member is rapidly attenuated.

[0018] Preferably, connection plates are provided at the intersections of the inter-column supporting steel members, and a plurality of loops are formed between the inter-column supporting steel members and the columns through the connection plates.

[0019] According to the above technical solution, the present invention first needs to design a distribution map of magnetic materials for steel structures. The distribution state of magnetic materials is designed based on the distribution of steel structures on site, and the non-uniform magnetic field between two columns is reasonably set by setting the position of magnetic materials. When the inter-column supporting steel member vibrates, the magnetic flux in several planes enclosed by the inter-column supporting steel member changes, thereby generating instantaneous current and forming an Ampere force to prevent its vibration.

[0020] By utilizing the principle that when a metal conductor moves irregularly in the non-uniform magnetic field, an instantaneous motional current is generated due to electromagnetic induction, and then it is affected by the Ampere force, which prevents the movement of the conductor, a non-uniform magnetic field is constructed between two adjacent columns to achieve the vibration reduction effect on the inter-column supporting steel structure between the two columns.

[0021] When the inter-column support steel structure is in a non-uniform magnetic field environment and vibrates, the magnetic flux in several planes enclosed by the inter-column support steel structure will change. Therefore, an instantaneous induced current will be generated in the vibrating inter-column support steel structure, causing the inter-column support steel structure to be affected by the Ampere force. According to Lenz's law, the effect of the Ampere force will hinder the movement of the conductor in the magnetic field. Since the Ampere forces at various locations of the inter-column support steel structure cannot offset each other in a non-uniform magnetic field environment, the total effect of the Ampere forces at various locations on the inter-column support steel structure is to rapidly attenuate its vibration. From an energy perspective, the harmful mechanical energy of the inter-column support steel structure's own vibration is utilized, and through electromagnetic induction, these mechanical energies are converted into electrical energy and then converted into heat and dissipated in the environment.

[0022] Since the steel support components between columns are good conductors and have good grounding protection, they will not accumulate electric charges. Therefore, the method of constructing a non-uniform magnetic field environment can suppress the vibration of the steel support components between columns, and the whole process does not consume any additional energy, which is safe, economical, green and environmentally friendly.

[0023] The magnetic materials on two adjacent columns are arranged in a one-to-one correspondence, and the two opposite surfaces of the two corresponding magnetic materials are respectively arranged as the N pole and the S pole, that is, the magnetic poles of the two corresponding magnetic materials are in opposite directions. Magnetic flux lines are generated between the two corresponding magnetic materials, and the direction of the magnetic flux lines is from the N pole to the S pole, passing through the area between the two columns 2. Preferably, the heights of the two corresponding magnetic materials are consistent, and the magnetic flux lines are distributed in the horizontal direction.

[0024] By arranging two one-to-one corresponding magnetic materials in an offset manner, a non-uniform magnetic field can be formed between the two columns, in which the magnetic flux lines are not parallel to the plane where the inter-column supporting steel member is located. The vibration of the inter-column supporting steel member can be regarded as a translation or rotation around the axis along the normal direction of the plane where the inter-column supporting steel member is located. When the inter-column supporting steel member is displaced in the non-uniform magnetic field between the two columns, the magnetic flux of several closed planes enclosed by the inter-column supporting steel member will change. Since these closed planes of good conductors are all composed of good conductors, these closed surfaces will spontaneously form loops with the surrounding steel structures. Therefore, the inter-column supporting steel member will be subject to multiple Ampere forces that prevent it from vibrating during the vibration process. According to Lenz's law, the effect of these Ampere forces will hinder the change of magnetic flux in several closed planes enclosed by the inter-column supporting steel members 3, thereby hindering the vibration of the inter-column supporting steel members. In addition, along the length direction of the inter-column supporting steel members, the size and direction of these Ampere forces at different positions of the inter-column supporting steel members are not exactly the same, but the overall effect is to hinder relative motion. Therefore, under the joint action of these Ampere forces, the vibration of the inter-column supporting steel members will rapidly decay until it returns to a state of equilibrium.

[0025] After the magnetic materials are installed in place according to the positions in the distribution map, a non-uniform magnetic field between the two columns can be obtained. First, the magnetic materials are temporarily fixed so that the positions of the magnetic materials can be adjusted according to the actual situation on site. After all the magnetic materials are temporarily fixed, the vibration of the steel members supporting the columns is observed. If there is no obvious vibration, there is no need to adjust the positions of the magnetic materials. If the steel members supporting the columns have obvious vibrations, the number and positions of the magnetic materials 1 on the columns on both sides need to be adjusted. Usually, when the steel members supporting the columns have obvious vibrations, the density of the magnetic materials needs to be increased.

[0026] When it is found that all the inter-column supporting steel components have no obvious vibration during actual use, it means that the system can achieve the effect of rapid vibration reduction. At this time, the magnetic materials can be reinforced so that they can be reliably maintained in their current positions.

[0027] After using it for a period of time, if it is found that some of the inter-column supporting steel components have obvious vibrations during use, it means that the magnetic attenuation of some magnetic materials has caused the magnetic field strength to weaken, which reduces the Ampere force generated by the non-uniform magnetic field on the inter-column supporting steel components, thereby reducing the vibration reduction effect of the system. At this time, it is necessary to find the magnetic material with magnetic attenuation and replace it.

[0028] Preferably, all corresponding magnetic materials on the columns on both sides of the inter-column supporting steel members with obvious vibration are tested, so that all magnetic materials with magnetic attenuation can be replaced uniformly, thereby ensuring the reliability of the system's vibration reduction effect.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a schematic diagram of the distribution of magnetic materials and magnetic flux lines on two adjacent columns;

[0032] Figure 2 It is a schematic diagram of the distribution mode of magnetic materials and the plane projection of magnetic flux lines of a steel enclosure structure induction vibration reduction device;

[0033] Figure 3 It is a schematic diagram of the front elevation projection of the magnetic flux lines in two adjacent columns;

[0034] Figure 4It is a one-to-one correspondence between the distribution of magnetic materials, the distribution of magnetic flux lines, and the plane projection diagram of the forces on the rod when it vibrates;

[0035] Figure 5 Several closed conductor frames formed when the structure vibrates and simplified translation and rotational motion models when the structure vibrates;

[0036] Figure 6 It is a schematic diagram of the distribution of magnetic materials adjacent to each other in the height direction on the same column, the direction of magnetic poles and the distribution of magnetic flux lines.

[0037] Description of Reference Numerals

[0038] 1 magnetic material 2 columns

[0039] 3. Supporting steel members between columns 4. Connection plates DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] In the present invention, unless otherwise stated, directional words contained in terms such as "adjacent, relative, offset, circumferential, vertical, between" merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0042] A construction method for an induction vibration reduction device for a steel enclosure structure, the construction method comprising:

[0043] Step 1, designing a distribution map of magnetic material 1;

[0044] Step 2: Temporarily install magnetic material 1 on site according to the distribution map;

[0045] Step 3: Adjust the installation direction and installation density of the magnetic material 1 according to the actual effect of vibration reduction;

[0046] Step 4, fastening the magnetic material 1;

[0047] Step 5: Maintain the induction vibration reduction device of the steel enclosure structure.

[0048] Through the implementation of the above technical solution, it is first necessary to design a distribution diagram of the magnetic material 1 for the steel structure. The distribution state of the magnetic material 1 is designed based on the distribution of the steel structure on site, and the position of the magnetic material 1 is reasonably set. The non-uniform magnetic field is located between the two columns 2, so that when the inter-column support steel member 3 vibrates, the magnetic flux in several planes enclosed by the inter-column support steel member 3 changes, thereby generating instantaneous current and forming an Ampere force to prevent its vibration.

[0049] By utilizing the principle that when a metal conductor moves irregularly in the non-uniform magnetic field, an instantaneous motional current is generated due to electromagnetic induction, and then the conductor is affected by the Ampere force, which prevents the movement of the conductor, a non-uniform magnetic field is constructed between two adjacent columns 2, thereby achieving a vibration reduction effect on the inter-column supporting steel structure 3 between the two columns 2.

[0050] When the inter-column support steel member 3 is in a non-uniform magnetic field environment and vibrates, the magnetic flux in several planes enclosed by the inter-column support steel member 3 will change. Therefore, an instantaneous induced current will be generated in the vibrating inter-column support steel member 3, so that the inter-column support steel member 3 is subjected to the Ampere force. According to Lenz's law, the effect of the Ampere force will hinder the movement of the conductor in the magnetic field. Since the Ampere forces at various locations of the inter-column support steel member 3 cannot offset each other in a non-uniform magnetic field environment, the total effect of the Ampere forces at various locations on the inter-column support steel member 3 is to rapidly attenuate its vibration. From the perspective of energy, the harmful mechanical energy of the vibration of the inter-column support steel member 3 is utilized, and through electromagnetic induction, these mechanical energies are converted into electrical energy and then converted into heat and dissipated in the environment.

[0051] Since the inter-column support steel member 3 is a good conductor and has good grounding protection, it will not accumulate charges. Therefore, the method of constructing a non-uniform magnetic field environment can suppress the vibration of the inter-column support steel member 3, and the whole process does not consume any additional energy, which is safe, economical, green and environmentally friendly.

[0052] The magnetic materials 1 on two adjacent columns 2 are arranged in a one-to-one correspondence, and the two opposite surfaces of the two corresponding magnetic materials 1 are respectively arranged as the N pole and the S pole, that is, the magnetic poles of the two corresponding magnetic materials 1 are in opposite directions. Magnetic flux lines are generated between the two corresponding magnetic materials, and the direction of the magnetic flux lines is from the N pole to the S pole, passing through the area between the two columns 2. Preferably, the heights of the two corresponding magnetic materials 1 are consistent, and the magnetic flux lines are distributed in the horizontal direction.

[0053] By arranging two one-to-one corresponding magnetic materials 1 in an offset manner, a non-uniform magnetic field can be formed between the two columns 2, in which the magnetic flux lines are not parallel to the plane where the inter-column supporting steel member 3 is located. The vibration of the inter-column supporting steel member 3 can be regarded as a translation or rotation around the axis along the normal direction of the plane where the inter-column supporting steel member 3 is located. When the inter-column supporting steel member 3 is displaced in the non-uniform magnetic field between the two columns 2, the magnetic flux of several closed planes enclosed by the inter-column supporting steel member 3 will change. Since these closed planes of good conductors are all composed of good conductors, these closed surfaces will spontaneously form a loop with the surrounding steel structure. Therefore, the inter-column supporting steel member 3 will be subjected to multiple Ampere forces that prevent it from vibrating during the vibration process. According to Lenz's law, the effect of these Ampere forces will hinder the change of magnetic flux in several closed planes enclosed by the inter-column supporting steel members 3, thereby hindering the vibration of the inter-column supporting steel members 3. In addition, along the length direction of the inter-column supporting steel members 3, the sizes and directions of these Ampere forces at different positions of the inter-column supporting steel members 3 are not exactly the same, but the overall effect is to hinder relative motion. Therefore, under the joint action of these Ampere forces, the vibration of the inter-column supporting steel members 3 will rapidly decay until it returns to a state of equilibrium.

[0054] After the magnetic materials 1 are installed in place according to the positions in the distribution map, a non-uniform magnetic field between the two columns 2 can be obtained. First, the magnetic material 1 is temporarily fixed so that the position of the magnetic material 1 can be adjusted according to the actual situation on site. After all the magnetic materials 1 are temporarily fixed, the vibration of the inter-column supporting steel members 3 is observed. If there is no obvious vibration, there is no need to adjust the position of the magnetic material 1. If it is found that the inter-column supporting steel members 3 have obvious vibration, it is necessary to adjust the number and position of the magnetic materials 1 on the columns 2 on both sides. Usually, when the inter-column supporting steel members 3 have obvious vibration, the density of the magnetic material 1 needs to be increased.

[0055] When it is found that all the inter-column supporting steel components 3 have no obvious vibration during actual use, it means that the system can achieve the effect of rapid vibration reduction. At this time, the magnetic materials 1 can be reinforced so that these magnetic materials 1 can be reliably maintained in their current positions.

[0056] After using it for a period of time, if it is found that some of the inter-column supporting steel components 3 have obvious vibrations during use, it means that the magnetic attenuation of some magnetic materials 1 causes the magnetic field strength to weaken, which reduces the Ampere force generated by the non-uniform magnetic field on the inter-column supporting steel components 3, thereby reducing the vibration reduction effect of the system. At this time, it is necessary to find the magnetic material 1 with magnetic attenuation and replace it.

[0057] Preferably, all the corresponding magnetic materials 1 on the columns 2 on both sides of the inter-column supporting steel member 3 with obvious vibration are inspected, so that all the magnetic materials 1 with magnetic attenuation can be replaced uniformly, thereby ensuring the reliability of the system vibration reduction effect.

[0058] In this embodiment, preferably, in step 1, the distribution diagram includes the installation height, magnetic pole direction and required quantity of the magnetic material 1 .

[0059] The magnetic material 1 is eccentrically arranged, and one and only one end of the magnetic material 1 extends beyond the boundary of the column 2;

[0060] Two corresponding magnetic materials 1 extend toward the inside and outside of the pillar 1 respectively.

[0061] Since the magnetic poles of the two magnetic materials 1 are opposite, that is, the two opposite surfaces of the two magnetic materials 1 are respectively set as the N pole and the S pole, a non-uniform magnetic field can be effectively constructed by eccentrically setting the magnetic materials 1. When the two corresponding magnetic materials 1 extend toward the inside and outside of the pillar 1 respectively, as shown in FIG. Figure 4 As shown, the magnetic flux lines between the two magnetic materials 1 will not be parallel to the inter-column support steel member 3, so the magnetic induction intensity, that is, the magnetic flux density, at different positions will be different. At the same time, when the rod vibrates, due to the constraints on the edges, the movement speed of the middle of the rod will be greater than that of the ends of the rod, so that a potential difference will be generated at different positions, and then an induced current and Ampere force will be generated. According to Lenz's law, the effect of the Ampere force in the inter-column support steel member 3 will generally hinder the vibration of the inter-column support steel member 3.

[0062] By setting the magnetic material 1 to extend beyond the boundary of the column 2, not only can a non-uniform magnetic field be constructed between two adjacent columns 2, but also the range of the non-uniform magnetic field can be expanded so that the non-uniform magnetic field can cover the area outside the boundary of the column 2. When the inter-column support steel member 3 vibrates to a position beyond the boundary of the column 2, it can still be affected by the Ampere force, and the force is sufficient to quickly restore the inter-column support steel member 3 that vibrates beyond the boundary of the steel structure to a balanced position.

[0063] A plurality of magnetic materials 1 are arranged on the pillars 2 , corresponding one-to-one to the magnetic materials 1 of adjacent pillars 2 .

[0064] like Figure 1 As shown, the magnetic poles of the magnetic materials 1 corresponding to each other on two adjacent columns 2 are opposite and at the same height, so as to generate a magnetic field at the level of magnetic flux lines between the two columns 2. A plurality of magnetic materials 1 corresponding to each other on the same column 2 are arranged, and these magnetic materials 1 are located at different heights, so that a magnetic field can exist along the height direction of the column 2, so that the inter-column supporting steel member 3 can be subjected to the effect of a non-uniform magnetic field at all locations along the length direction during the vibration process.

[0065] Preferably, the magnetic material 1 is arranged at periodic intervals along the height direction of the pillar 2, so that the magnetic field between the two pillars 2 is stronger at the position close to the magnetic material 1 and weaker at the position far away from the magnetic material 1. By arranging the magnetic material 1 distributed at periodic intervals along the height direction, a non-uniform magnetic field with a regularly distributed magnetic field strength along the height direction of the pillars 2 can be constructed between two adjacent pillars 2.

[0066] Preferably, the magnetic material 1 is arranged to be denser in the middle position near the height direction of the column 2, and to be sparser in the position near the two ends of the column 2. By gradually sparsely ...

[0067] Furthermore, by arranging two one-to-one corresponding magnetic materials 1 at the same height as the ends of the inter-column supporting steel members 3 , the end vibrations of the inter-column supporting steel members 3 are effectively suppressed, thereby achieving rapid suppression of the vibrations of the inter-column supporting steel members 3 .

[0068] In the steel structure of a factory, many columns 2 are usually arranged, and any two adjacent columns 2 can be provided with a plurality of magnetic materials 1 facing each other.

[0069] In this embodiment, preferably, the one-to-one corresponding magnetic materials 1 on two adjacent pillars 2 are set as a group of magnetic materials;

[0070] There are at least two groups of magnetic materials on the same column 2.

[0071] When there are multiple pillars 2 and magnetic materials 1 are arranged one by one between any two adjacent pillars 2 , there are at least two groups of magnetic materials 1 on the same pillar 2 .

[0072] like Figure 2 As shown, when the column 2 is set at a corner, the column 2 is adjacent to only two columns 2, so two groups of magnetic materials are set on the column 2. When the column 2 is located at other positions except the corner, there are three columns 2 adjacent to it, so these columns are usually provided with three groups of magnetic materials.

[0073] On the same column 2, the magnetic pole directions of any two magnetic materials 1 in the same group of magnetic materials are set to be the same.

[0074] The magnetic field constructed by a group of magnetic materials on two adjacent columns 2 has the same direction of magnetic flux lines, so that the inter-column supporting steel member 3 can obtain the maximum change of magnetic flux during the vibration process, thereby avoiding the loss of magnetic flux lines in different directions during the vibration process, which affects the vibration reduction effect.

[0075] On the same column 2 , magnetic materials 1 belonging to different groups of magnetic materials are staggeredly distributed along the circumference of the column 2 .

[0076] Since multiple groups of magnetic materials are arranged on the pillar 2 , and each group of magnetic materials is opposite to different other pillars 2 , different groups of magnetic materials 1 are located on different vertical surfaces of the pillar 2 .

[0077] Along the height direction of the pillar 2, the magnetic material 1 is distributed in a spiral shape.

[0078] In order to avoid mutual influence between different groups of magnetic materials 1, on the same column 2, other groups of magnetic materials between two adjacent magnetic materials 1 belonging to the same group of magnetic materials are arranged at intervals. Preferably, other groups of magnetic materials between two adjacent magnetic materials 1 belonging to the same group of magnetic materials are evenly distributed between the two adjacent magnetic materials 1 of the same group.

[0079] In one embodiment, the distance between any two adjacent magnetic materials 1 in the same group of magnetic materials 1 located on the same column 2 is equal, so the multiple magnetic materials located on the same column 2 are repeated periodically along the height direction. Since these magnetic materials 1 belonging to different groups are staggered along the circumference of the column 2, these magnetic materials 1 are distributed in a spiral shape along the height direction of the column 2, and the pitch is consistent.

[0080] In another embodiment, the magnetic materials 1 in the same group of magnetic materials 1 located on the same column 2 are densely distributed near the middle height of the column 2, while the magnetic materials 1 near the two ends of the column 2 are sparsely distributed. Similarly, since the magnetic materials 1 belonging to different groups are staggered along the circumference of the column 2, these magnetic materials 1 on the column 2 are spirally distributed along the height direction of the column 2, and the pitch gradually increases from the middle to the two ends.

[0081] On the same column 2, the magnetism of two magnetic materials 1 adjacent to each other along the height direction repels each other.

[0082] like Figure 6 As shown, on the same column 2 , the magnetic forces of two magnetic materials 1 adjacent to each other in the height direction repel each other, so that fewer magnetic flux lines pass through the column 2 , and accordingly, more magnetic flux lines are distributed between the two columns 2 .

[0083] Based on the principle that when a metal conductor moves irregularly in a non-uniform magnetic field, an instantaneous induced current will be generated due to electromagnetic induction, and then it will be affected by the Ampere force, and the Ampere force will prevent the magnetic flux in the conductor frame from changing, a non-uniform magnetic field is constructed between two adjacent columns 2. When the inter-column supporting steel member 3 is in the non-uniform magnetic field environment and vibrates, the magnetic flux in several conductor frames passing through the inter-column supporting steel member 3 will change. Therefore, an instantaneous induced current will be generated in the vibrating inter-column supporting steel member 3, and multiple positions on the inter-column supporting steel member 3 will be affected by multiple Ampere forces in different directions. According to Lenz's law, the effect of these Ampere forces will hinder the movement of the conductor in the magnetic field. Therefore, the effect of these Ampere forces on the inter-column supporting steel member 3 is to rapidly attenuate its vibration.

[0084] From the energy point of view, the harmful mechanical energy of the vibration of the inter-column supporting steel member 3 is utilized, and through electromagnetic induction, this mechanical energy is converted into electrical energy and then converted into heat and dissipated into the environment.

[0085] Preferably, the steel enclosure structure induction vibration reduction device uses common ferrite hard magnetic material as the magnetic material 1.

[0086] Ordinary ferrite hard magnetic materials such as ferrite magnetic tiles have a magnetic permeability of μ≈5000μ0, and the magnetic induction intensity generated around them is B≈0.05-0.5T (Tesla). The frequency of mechanical vibration in heavy industrial plants is generally high, and the instantaneous rate of vibration can generally reach 0.7-1.0mm / s. Take a 5-meter-long ordinary steel structure H-shaped steel HW300 x 300 rod as a column support steel member 3 as an example, L=5.0m, cross-sectional area S=134.8cm 2 The motional electromotive force generated in the magnetic field is about E=BLV≈3.5x10-2~3.5x10-3 V, and the resistivity of ordinary rod steel material is about ρ=9.78x 10-8Ωm. It can be calculated that the resistance of the rod is about R=ρL / S≈0.36x 10-4Ω, and the Ampere force generated is about F=B2·L2·V / R≈1.73—173.6N (Newton). Since the component is in a complex non-uniform magnetic field, all its actual Ampere forces are forces in multiple directions, and the overall effect is to prevent vibration from occurring. The result of the combined force will cause the vibration to decay rapidly, thereby achieving the purpose of vibration reduction.

[0087] Based on the above calculations, it can be seen that since the resistance of the inter-column supporting steel structure 3 is very small, the use of ordinary ferrite hard magnetic materials can achieve the construction of a non-uniform magnetic field, and can produce a maximum force of about 200N. Therefore, the use of ordinary ferrite hard magnetic materials can achieve sufficient vibration reduction effect.

[0088] In this embodiment, preferably, in step 3, the density of the magnetic material 1 is increased or decreased according to the actual vibration reduction effect.

[0089] The vibration of the steel structure is affected by the vibration of the surrounding equipment during the production process. When the vibration of the surrounding equipment is strong, the vibration of the steel structure is also strong. When the vibration of the surrounding equipment is weak, the vibration of the steel structure is also weak.

[0090] Therefore, after installing the magnetic material 1 according to the distribution diagram, it is also necessary to observe the actual vibration of the inter-column supporting steel structure 3. When the vibration of the inter-column supporting steel structure 3 cannot be effectively suppressed, it is necessary to consider adding magnetic material 1 at this position to increase the strength of the non-uniform magnetic field, so that the Ampere force felt by the inter-column supporting steel structure 3 when it vibrates increases, so that the inter-column supporting steel structure 3 can be subjected to greater resistance when it vibrates, thereby achieving the effect of reliably suppressing the vibration of the inter-column supporting steel structure 3; when it is found that the vibration of the equipment around the inter-column supporting steel structure 3 is not obvious, it can be considered to reduce the magnetic material 1 at this position to achieve the purpose of saving materials.

[0091] In this embodiment, preferably, in step 4, the magnetic material 1 is fixed to the column 2 by screwing.

[0092] The magnetic material 1 is fixed to the column 2 by screwing. First, a hole needs to be drilled on the column 2, and then a U-shaped fastener is used to fix the magnetic material 1 to the surface of the column 2. Then, a nut is installed on the side of the column 2 facing away from the magnetic material 1. Nuts are installed at both ends of the U-shaped fastener. By tightening the nuts, the position of the magnetic material 1 is fixed.

[0093] By using this method of drilling and installing the magnetic material 1 , the position of the magnetic material 1 can also be marked along the height direction of the column 2 , so that when a new magnetic material 1 is replaced, the installation position of the new magnetic material 1 can be quickly located.

[0094] In this embodiment, preferably, the gap between the magnetic material 1 and the pillar 2 is filled.

[0095] Since the surface of the magnetic material 1 is a curved surface, it cannot achieve reliable fit with the column 2. Therefore, by filling the gap between the magnetic material 1 and the column 2, the magnetic material 1 can be reliably fixed to ensure the stability of the position of the magnetic material 1 during use.

[0096] In this embodiment, preferably, in step 5, a magnetometer is used to measure the magnetic strength of the magnetic material 1, and the magnetic material 1 with reduced magnetism is replaced.

[0097] After being used for a period of time, the magnetic material 1 may experience magnetic attenuation. In order to ensure the vibration reduction effect of the system, the magnetic material 1 with attenuated magnetic properties needs to be replaced.

[0098] Since the magnetic attenuation of the magnetic material 1 cannot be directly distinguished, it is necessary to use a magnetometer to detect the magnetic strength of the magnetic material 1.

[0099] In one embodiment, a criterion for judging the magnetic strength is set, for example, a value A is set as the criterion for judging the magnetic strength of the magnetic material. When the magnetic strength is greater than A, the magnetic properties of the magnetic material 1 are qualified, and when the magnetic strength of the magnetic material 1 is less than A, the magnetic properties of the magnetic material 1 are unqualified. In actual use, a corresponding group of magnetic materials on the columns 2 on both sides of the inter-column supporting steel member 3 that generates obvious vibrations is detected. When the magnetic strength of the detected magnetic material 1 is less than A, the magnetic material 1 needs to be replaced. When the magnetic strength of the magnetic material 1 is not less than A, the magnetic material 1 does not need to be replaced.

[0100] In one implementation, the number of magnetic materials replaced each time is set to N. In actual use, all the corresponding magnetic materials 1 on the columns 2 on both sides of the inter-column supporting steel member 3 that generates obvious vibration are detected. Preferably, these magnetic materials 1 can be numbered according to their heights, and the magnetic strengths of these magnetic materials 1 can be recorded one by one according to the numbers, and N magnetic materials with the smallest magnetic strengths are selected for replacement.

[0101] In one embodiment, if the magnetic strength of the magnetic material 1 at a critical position is less than A, it is replaced. If the magnetic strength of the magnetic material 1 at a non-critical position is less than A, the magnetic strength of another magnetic material 1 corresponding to it is checked. If the magnetic strength of the other magnetic material 1 is greater than A, there is no need to update the magnetic material 1; if the magnetic strengths of the two corresponding magnetic materials 1 are both less than A, one of the magnetic materials 1 is selected for replacement and the other is not replaced.

[0102] Preferably, the position close to the middle of the column 2 is the critical position, and the positions close to both ends of the column 2 are non-critical positions.

[0103] An inductive vibration reduction device for a steel enclosure structure is constructed according to a construction method for an inductive vibration reduction device for a steel enclosure structure. The inductive vibration reduction device for the steel enclosure structure can construct a three-dimensional non-uniform magnetic field environment between two adjacent columns 2. An inter-column supporting steel member 3 is fixedly connected to the column 2 to form a loop. When the inter-column supporting steel member 3 located between the two columns 2 vibrates, the inter-column supporting steel member 3 will generate an Ampere force that hinders movement in the three-dimensional non-uniform magnetic field environment. Under the action of the Ampere force, the vibration mechanical energy of the inter-column supporting steel member 3 decays rapidly.

[0104] In this embodiment, preferably, connecting plates 4 are provided at the intersections of the inter-column supporting steel members 3 , and a plurality of loops are formed between the inter-column supporting steel members 3 and the columns 2 through the connecting plates 4 .

[0105] In actual production, during the construction of the steel structure, the inter-column support steel member 3 is usually configured as four rods connected by a connecting plate 4, such as Figure 1 As shown in the figure, when the device is forced to vibrate due to operation, the amplitude of the middle part is larger and the amplitude of the edge part is smaller. It can be regarded as four conductor frames rotating around the axis, such as Figure 5 As shown, these conductor frames will generate induced current when they translate or rotate in the non-uniform magnetic field, which can be approximately regarded as a power source. The entire structure is equivalent to several parallel power sources. Since the cross-section of these rods is much larger than that of general wires and they are connected in parallel, the total resistance of the inter-column support steel member 3 is very low. Therefore, in actual use, the current passing through the inter-column support steel member 3 is larger, so during the vibration process, the inter-column support steel member 3 can receive greater resistance to obtain a better vibration reduction effect.

[0106] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0107] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0108] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A construction method for an induction vibration reduction device for a steel enclosure structure, characterized in that: The construction method comprises: Step 1, designing a distribution map of the magnetic material (1); Step 2: temporarily installing the magnetic material (1) on site according to the distribution map; Step 3: adjusting the installation direction and installation density of the magnetic material (1) according to the actual effect of vibration reduction; Step 4, fastening the magnetic material (1); Step 5: Maintain the induction vibration reduction device of the steel enclosure structure.

2. The construction method of the steel enclosure structure induction vibration reduction device according to claim 1 is characterized in that: In step 1, the distribution diagram includes the installation height, magnetic pole direction and required quantity of the magnetic material (1).

3. The construction method of the steel enclosure structure induction vibration reduction device according to claim 2 is characterized in that: In step 3, the density of the magnetic material (1) is increased or decreased according to the actual vibration reduction effect.

4. The construction method of the steel enclosure structure induction vibration reduction device according to claim 1 is characterized in that: In step 4, the magnetic material (1) is fixed to the column (2) by screwing.

5. The construction method of the steel enclosure structure induction vibration reduction device according to claim 4 is characterized in that: Filling the gap between the magnetic material (1) and the pillar (2).

6. The construction method of the steel enclosure structure induction vibration reduction device according to claim 1 is characterized in that: In step 5, a magnetometer is used to measure the magnetic strength of the magnetic material (1), and the magnetic material (1) with reduced magnetism is replaced.

7. A steel enclosure structure induction vibration reduction device constructed according to the construction method of the steel enclosure structure induction vibration reduction device according to any one of claims 1 to 6, characterized in that: The steel enclosure structure induction vibration reduction device can construct a three-dimensional non-uniform magnetic field environment between two adjacent columns (2); the inter-column support steel member (3) is fixedly connected to the columns (2) to form a loop; when the inter-column support steel member (3) located between the two columns (2) vibrates, in the three-dimensional non-uniform magnetic field environment, the inter-column support steel member (3) will generate an Ampere force that hinders movement; under the action of the Ampere force, the vibration mechanical energy of the inter-column support steel member (3) is rapidly attenuated.

8. The induction vibration reduction device for steel enclosure structure according to claim 7 is characterized in that: A connection plate (4) is provided at the intersection of the inter-column supporting steel members (3), and a plurality of loops are formed between the inter-column supporting steel members (3) and the columns (2) through the connection plate (4).

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